Studor - 20302 - Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve … Features_On-Surface Replacing compatible cast iron pump

Replacing compatible cast iron pump flanges

control method

this rotor delivers uniform coverage with large

•Over the stud application offers the industry’s strongest installation Fast

Studor - 20302 - Maxi-Vent 3-Inch to 4-Inch Air Admittance Valve … Features_On-Surface Replacing compatible cast iron pumpBrand: STUDOR by IPS Corporation Manufacturer Part Number: 20302 Big Frog Supply SKU: 20302 Product Overview The STUDOR Maxi Vent 20302 is an air admittance valve for compatible 3 inch and 4 inch drain, waste, and vent systems. It can serve as an individual, branch, circuit, or stack vent where approved by the applicable plumbing code. When a fixture discharges and creates negative pressure in the drainage system, the one way valve opens to admit air.